Show that the point `(x ,y)` given by `x=(2a t)/(1+t^2)a n dy=((1-t^2)/(1+t^2))` lies on a circle for all real values of `t` such that `-1lt=tlt=1,` where a is any given real number.

Show that the point (x,y) given by x = (2at)/(1 + t^(2)) and y = (a(1-t^(2)))/(1+t^(2)) lies on a circle for all real values of t such that -1 lt t lt 1 where a is any given real numbers.

Show that the point (x,y) given by x=(2at)/(1+t^(2)) and y=((1-t^(2))/(1+t^(2))) lies on a circle for all real values of t such that -1<=t<=1 where a is any given real number.

Show that the point (x,y) given y x = ( 2at)/( 1+t^(2)) and y = (a( 1-t^(2)))/( 1+t^(2)) lies on a circle..

Find dy/dx: x=(2at)/(1+t^2), y=(a(1-t^2))/(1+t^2)

Show that the point : x=(2rt)/(1+t^2), y=(r(1-t^2))/(1+t^2) (r constant) lies on a circle for all values of t such that -1 le t le 1 .

Find dy/dx if x=(2at)/(1+t^2) , y=(a(1-t^2))/(1+t^2)

If x = (2t)/(1+t^(2)), y = (1-t^(2))/(1+t^(2)) then dy/dx =

If x=(2t)/(1+t^2) , y=(1-t^2)/(1+t^2) , then find (dy)/(dx) .

If x=(2t)/(1+t^2) , y=(1-t^2)/(1+t^2) , then find (dy)/(dx) .